Lock



March 3, 1942.

LOCK

2 Sheets-Shet 1 Filed Nov. 8, 1940 417/ M M I I m fr g INVENTORJ WM ATTORNEY March 3, 1942 A. H: GOLDEN ET AL 2,275,352

LOCK

Filed Nov. 8, 1940 2 Sheets-Sheet 2 INVENTQRJ {W wrzav ATTORNEY Patented Mar. 3, 1942 LOCK Abraham H. Golden and Gharles'Ledin, Stamford, Conn, assignors to The Yale &- Towne Manufacturing Company; Stamford, Conn, a corporation of Connecticut? Application November 8, 1940, SerialNo..3.64,8 58' 11 Claims.

This inventionrelates to alock, and more par.- ticularly. to means whereby a lock and the bolt which it operates, may be. assembled readily to each other and to a drawer or other like structure.

A feature 'of theinvention is the means for obtaining ready assembly of a bolt to a cylinder look when the key plug with which the lock is equipped is rotated to a particular position, and whereby the bolt maybe disassembled from the cylinder lock in a rotated position of the key plug without the utilization of special tools or apparatus.

For a description of our invention, we shall refer to the drawings wherein Fig. 1 is an exploded view showing the parts of our invention as applied to a lock of the pin tumbler type. Fig. 2 is a View of the bolt shown in Fig. 1, looking at the side thereof reverse to that'shown in Fig. 1. Fig. 3 is-a partial vertical section showing the look applied to a metal drawer, part of which is shown in Fig. 1. Figs. 4, 5 and 6 are views illustrating therelationship of the bolt to the key plug in three positions of the key plug and the bolt.

Fig. 7 is an exploded view similar to that of Fig. l, but showing the invention as applied to a cylinder lock of the plate tumbler type, or any other typeof lock, in which the key may be retracted in. two rotated positions of the key plug, as distinguished from the pin tumbler lock of Fig. 1 in which the key may be removed in only one position. Fig. 8 isa View of the bolt utilized in the modification of Fig. '7, taken on the side reverse to thatof Fig. '7, Fig. 9 is a view similar to Fig. 3 and showing a plate tumbler type of lock. Figs. 10, 11 and 12 are views similar to those of Figs. 4, 5 and 6 showing the bolt in its different relation.- ships to the key plug of the lock of Figs. '7 and 9.

Referring now more particularly to the drawings, and especially Figs. 1-6, a metal drawer to which our lock is adapted for assembly is designated by reference numeral I0, and has an upper edge ll equipped with an opening I2 through which the bolt I3 is adapted to protrude into looking engagement with the cabinet relatively to which the drawer Ill slides. The front of the drawer is designated by reference numeral [4, and hasan opening, l5 into which the cylinder lock Iii is insertible.

The cylinder look It is of. the pin tumbler type, as is best illustrated in Fig. 3, and contains a key plug I! which may be released relatively to the cylinder l6 by a setting of the drivers 18 and the tumblers 19 through avproperly bitted key 20, whereby to release the key plug, I! for free rotation, all as is well known inthis art. The cylinder 1 it may be assembled to the drawer In by itsinsertion throughthe opening lb. of the front M of: the drawer If], the. flat sides 2| of the. cylinder cooperating with. the sides of the. opening l5 to prevent. rotation; of the. cylinder. A nut 22 is threaded over the threads formed on the outer periphery of cylinder 16, as is quite clearly. shown in Fig.3; whereby tov maintain. the cylinder against endwiseremovalrelatively. tothe drawer L0.

Thekey plug 1.!- of the cylinder I6 is equipped with a pair of. operating pins 23, whereby the rotation of the plug. will, through the. said pins.- 23, actuatethe. bolt. [3, as will, bev hereinafter set forth. Mountedonthe. end'softhe pinsis a disk 24 which assists in. the; guiding. ofthe bolt 13, as will be fully appreciated. Referring now to Fig. 2, the bolt. [3. is shown. as-having'what we term a cam slot 25., from which there leads what we term an entrance. slot 26.. Itis the purpose of the cam slot 25 tocooperate with the pins 23 so that rotation of. the key plug andits said. pins 23 will effect a vertical sliding. movement of the bolt I3. The belt 1.3, has a. counter-sunk depression 21 whereby it may lie closely against the end of the cylinder Iii and. with its cam. slot about the pins 23', as is. probably best illustrated. in Fig. 3.. The left hand vertical'side 28 of the counter-sunk portion 21 bears against one of the flat sides 2! of the cylinder to assistv in guiding the bolt. The other flat. side 2| ofthe. cylinder cooperates with a spring 29' carried by the. bolt 13, and having V portions ML and 3.! which press against the cylinder for yieldingly holding the bolt l3 against vibration in certain-of. its. positions, all as will be. herein.- af ter. set' forth..

We should. now like. to indicate. just how the bolt 13' is assembled relatively to -the cylinder and drawer, after the cylinder is first secured to the drawer inthev position of Fig. 3 through cooperationofthe nut. 22.v The key 20. is inserted into the cylinder. key plug IT and rotates. the plug to the: position shown in Figs. 1 and 6, so that the pins2'3. will be in vertical alignment, as bestillustrated in Fig. 6. The bolt i3 may then be moved downwardly vertically through the opening [2 in the upper edge ll of the drawer, it being clear that the entrance slot 25' ofthe bolt will allow thebolt to. move totheposition. of Fig. 6 where the lug, 32"protruding. into the cam slot 25, impinges against the, upper of the pins 23'. Rotation of the key plug clockwisefrom the particular position of Fig. 6 to the positionof Fig. 4, willdraw the bolt [3? downwardly until its upper edge lies flush with the upper edge I l of the drawer, this being the unlocked position of the bolt.

When it is desired to throwthe bolt into fully locked position, as when the drawer is closed, the key plug need merely be rotated counter clockwise from the position of Fig. 4 to the position of Fig. 5, in which position it is obvious the bolt is fully projected.

Incidentally, in the positions of Figs. 4 and 5, the key plug will be positioned relatively to the cylinder so that its tumblers I9 are aligned with the drivers [8, permitting withdrawal .of the key 28. In other words, the plug ll rotates 360 in moving the bolt 13 from the position of Fig. 4 to the position of Fig. 5, and the key is removable in either one of those positions. the key plug in Fig. 6 is at 90 from the position of Fig. 5, and is in between the fully projected and fully retracted positions of the bolt.

only by proper and authorized key operation.

Naturally, it will be appreciated that when it is desired to remove the bolt l3 and thereafter to remove the cylinder lock I6, it is merely necessary to insert a key to rotate the key plug IT to the position of Fig. 6, in which position an upward pull on the bolt will readily withdraw it from its assembled relation to the cylinder [6. noted in Fig. 4, the V portion of the spring 29 cooperates with the surface of the cylinder just below the flat portion 2| thereof whereby to yieldingly hold the bolt 23 in the particular position against vibration. In the position of Fig. 5, both V portions 30 and 3| cooperate with the cylinder for the same purpose as indicated supra, the upper V portion Sill lying against the upper portion of the cylinder, while the lower V portion 3i lies against the lower portion of the cylinder.

Referring now to Figs. 7-12, inclusive, we show our invention as applied to a disk tumbler type of lock in which the key plug is rotated only 180 from full looking to full unlocking position, and in which the key may be withdrawn in either position, all as will be understood by those skilled in this art. The cylinder of the disk tumbler modification of Figs. 7-12 is designated by reference numeral 35, and is secured relatively to the drawer 16 by a nut 22, just as is the cylinder lock of the first modification. The key plug of cylinder is designated by reference numeral 36, and has mounted therein plate tumblers 31 of the usual type well known in this art, the tumblers cooperating with slots 38 in the cylinder 35 for maintaining the key plug locked in either of two rotated positions, 180 apart, one of the positions corresponding to the release or fully retracted position of the bolt, while the other corresponds to the locked or fully thrown position of the bolt.

Mounted on the end of the key plug 36 is a single cam pin 39 and supported by this pin is a retaining and guiding disk All for the bolt 4|. This bolt 4| is equipped with a cam slot 42, from which leads an entrance slot 43, just as in the bolt [3 of our first modification. The bolt M is guided by the cylinder, just as is the bolt of the first modification, and has a spring 29 which is exactly the same as the spring of the first modification and performs the same service.

For assembling the bolt 4| relatively to the cylinder 35, the key plug must be rotated to its position of Fig. 12, which corresponds, incidentally, to the fully thrown position of the bolt. In this position of the mechanism, the bolt is readily inserted into assembled cooperation with the cylinder 35, since'its entrance slot 42 is in alignment with the c am pin 39. Rotation of the key plug with cam pin 39 in a counter clockwise direction allows the cam pin to enter the cam slot 42, as

AS will be The position of It is obvious I that the plug position of Fig. 6 may be reached.

illustrated in Fig. 11, after which further rotation in a counter clockwise direction to the position of Fig. 10, fully retracts the bolt. In the position of Fig. 10, the bolt can obviously not be withdrawn from its assembled relation to the cylinder. In the fully released position of the bolt and key plug in Fig. 12, the bolt may obviously be withdrawn at will, and without tools or implements of any sort.

Naturally, the bolt cannot be moved to the position of Fig. 12 except by one who has a key for rotating the plug. Moreover, when the bolt is moved to locked or projected position for looking a drawer, it can obviously not be tampered with, even though at that time it is in the position of Fig. 12. It is seen, moreover that the construction of Figs. 7-12 distinguishes from the construction; of Figs. 1-6 in that the key plug 35 need be rotated only between fully locked and fully unlocked position, and that the key may be withdrawn in either position. It is thought that our invention will now be clearly understood by those skilled in the art.

We now claim:

1. In a clock of the class described, a cylinder. a

' key plug rotatable relatively to said cylinder, a

bolt slidable relatively to said cylinder, a cam pin on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said cam pin cooperates for imparting sliding movement to said bolt, as said key plug rotates, said cam slot terminating in an open entrance slot adapted for alignment with the cam pin on said key plug in one rotated position of said'key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said cam pin until said cam pin enters said cam slot, whereby to assemble said bolt to said cam pin for actuation thereby, rotation of said cam pin thereafter with said plug acting on said outlining surface to move said bolt relatively to said cylinder, said bolt being freely slidable for removal when said key plug is rotated once again to align its cam pin with said open entrance slot.

2. In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, a bolt slidable relatively to said cylinder, a cam pin on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said cam pin cooperates for imparting sliding movement to said bolt, as said key plug rotates, said cam slot terminating in an entrance slot which has an open end for alignment with the cam pin on said key plug in one rotated position of said key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said cam pin until a predetermined surface defining said cam slot engages said cam pin, rotation of said cam pin thereafter with said plug acting to move said bolt relatively to said cylinder, said bolt being freely slidable for removal when said key plug is rotated once again to align its cam pin with said open entrance slot.

3. In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, a bolt slidable relatively to said cylinder, a cam pin on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said cam pin cooperates for imparting sliding movement to said bolt, said cam slot terminating in an entrance slot which has an open end for alignment with the cam pin on said key plug in one rotated position of said keg plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said cam pin until a predetermined surface defining said cam slot aarzaeee engages said" campin, rotationof-v said cam pin thereafter-with said plugacting to'move said bolt relatively tosaid cylinder, said bolt being freely slidableforremovaliwhensai'd key plug is rotated once again to align its cam: pin with said open entranceslot, said bolt' being' held by said cam pin against sliding for removal when said cam pin is not in alignment withsaid entrance slot.

4i. a lockf tl le class described, a cylinder, a key plug rotatable: relativelyto said cylinder, a bolt slidable relatively: to said cylinder, a pair of pins on: the end of said plug, said bolt having a cam'slot, an outlining surface for said cam slot with whichsaidpairof pins cooperates for imparting sliding movement to said bolt, said cam slot terminating in an entrance slot whichhas an open end for: alignment with the pair of pins on said key pluginone rot'atedrposition of said key plug so that said bolt may slide freely relatively to said cylinderwi-thsaid entrance-slot aligned with said pair of pinsuntil said-boltreaches a predetermined position relatively to said cylinder, rotation of said pair of pins thereafter with said plug acting against said outlining surface to move said bolt relatively to said cylinder, said bolt being slidable for removal when said key plug is rotated once again to align its pair of pins with said open entrance slot.

5. In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, a bolt slidable relatively to said cylinder, a pair of pins on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said pair of pins cooperates for imparting sliding movement to said bolt, said cam slot terminating in an entrance slot which has an open end for alignment with the pair of pins on said key plug in one rotated position of said key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said pair of pins until a predetermined surface defining said cam slot engages at least one of said pins, rotation of said pair of pins thereafter with said plug acting to move said bolt relatively to said cylinder while withdrawing said pins from alignment with said entrance slot, said bolt being always slidable for removal when said key plug is rotated once again to align its pair of pins with said open entrance slot, said bolt being held against sliding for removal by said pair of pins when said pair of pins is not in alignment with said entrance slot.

6, In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, a bolt mounted for sliding movement in said cylinder at right angles to the axis of rotation of said key plug, a cam pin on the end of said plug, said bolt having an entrance slot therein parallel to the direction of its sliding movement on said cylinder, said slot terminating in an open end at the end surface of said bolt, a cam slot defined by a surface of predetermined outline formed in said bolt and connecting with said entrance slot, the pin on said plug being rotatable with said plug into iii 7. In a lock of the class described, a cylinder, a

key plug-rotatable relatively to. said cylinder, a bolt mounted for sliding movement on. said. cylinder at. right angles tot-he axis of: rotation of. said key plug; apair of pins. on the end. of said plug, said bolt having an entrance. slot therein parallel to the directionof. its sliding movement on said cylinder, said slot. terminating in. an. open end at the end surface of said bolt, a. cam. slot defined by a surface of: predetermined outline formed in said. bolt. and connecting with said entrance slot, the: pair of pins: on said: plug being rotatable withsaid plug into alignment with said entrance slot. sothat said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said. pair of pins until a predetermined surface defining said cam, slot engages one of said pins, rotation of saidpair of pins thereafter with said plug. acting, to move said bolt relatively to said cylinder whilewithdrawing said pinsfrom alignment'with said entrance slot, said bolt being freely slidable for removal when said key plug is rotated once again to align its pair of pins with said entrance slot, said bolt being held against sliding for removal by said pair of pins when said pair of pins is not in alignment with said open entrance slot.

8. In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, a bolt slidable relatively to said cylinder, a cam pin on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said cam pin cooperates for imparting sliding movement to said bolt as said key plug rotates, said cam slot terminating in an open entrance slot adapted for alignment with the cam pin on said key plug in one rotated position of said key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said cam pin until said cam pin enters said cam slot whereby to assemble said bolt to said cam pin for actuation thereby, rotation of said cam pin thereafter with said plug acting on said outlining surface to move said bolt relatively to said cylinder, said bolt being slidable for removal when said key plug is rotated once again to align its cam pin with said open entrance slot, and a spring for yieldingly resisting said removal sliding movement of said bolt.

9. In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, 2. bolt slidable relatively to said cylinder, a cam pin on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said cam pin cooperates for imparting sliding movement to said bolt as said key plug rotates, said cam slot terminating in an open entrance slot adapted for alignment with the cam pin on said key plug in one rotated position of said key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said cam pin until said cam pin enters said cam slot whereby to assemble said bolt to said cam pin for actuation thereby, rotation of said cam pin thereafter with said plug acting on said outlining surface to move said bolt relatively to said cylinder, a spring between said bolt and cylinder for defining said assembled position of the bolt relatively to the cam pin, said bolt being slidable for removal when said key plug is rotated once again to align its cam pin with said open entrance slot, said spring yieldingly resisting said removal sliding of said bolt.

10. In a lock of the class described, a cylinder, a key plug rotatable relatively to said cylinder, a'bolt slidable relatively to said cylinder, a pair of pins on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said pair of pins cooperate for imparting sliding movement to said bolt, said cam slot terminating in an entrance slot which has an open end for alignment with the pair of pins on said key plug in one rotated position of said key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said pair of pins until said bolt reaches a predetermined position relatively to said cylinder, rotation of said key plug and its pins in one direction thereafter acting through contact of said pins with said outlining surface to project the bolt, while rotation in a reverse direction retracts the bolt, the said pins moving out of alignment with said entrance slot in either the retracted or projected positions of said bolt, whereby it is necessary to rotate the key plug and move said bolt in order to realign said pins with said entrance slot to slide the bolt out of assembled relaiton to said cylinder.

11. In a lock of the class described, a cylinder, 2. key plug rotatable relatively to said cylinder, 2. bolt slidable relatively to said cylinder, a pair of pins on the end of said plug, said bolt having a cam slot, an outlining surface for said cam slot with which said pair of pins cooperate for imparting sliding movement to said bolt, said cam slot terminating in an entrance slot which has an open end for alignment with the pair of pins on said key plug in one rotated position of said key plug so that said bolt may slide freely relatively to said cylinder with said entrance slot aligned with said pair of pins until said bolt reaches a prede- 

